Improvement in ventilators



L. J. WING: Ventilator.

No. 215,783. Patented May 27,1879.

Fig.1.

Witnesses: lnvenior:

".PETERS, PHOTO-UTHOGRAPMER, WASHINGTON D (L UNITED STATES PATENT FFieLEVI J. WING, BALTIMORE, MARYLAND.

lM PROVEM ENT- IN VENTI LAToRs.

Specification forming part of Letters Patent No. 215,783, dated May 27,1879; application filed November 8, 1878.

To all whom it may concern:

Be it known that I, LEVI J. WING, of the city of Baltimore: and State ofMaryland, have invented a new and useful Improvement in Ventilators, ofwhich the following is a specification.

The invention relates to an improvement in flue or shait ventilatorsthat are operated by a wind-wheel.

The object of the invention is to produce an article of manufactureadapted for public or private buildings of any size, which shall be atonce cheap and effective in its operation.

My invention will first be described in connection with the accompanyingdrawings, and then pointed out in the claims.

Figure 1 is a vertical section of my fan-ventilator. Fig. 2 is a detailview of parts of the wind-wheel.

The letterA represents the flue of the structure to be ventilated. Thismay be a special flue or shaft, or the ordinary smoke-flue of thechimney. B is the neck or portion of the apparatus which connects withthe fine. (1 is an enlarged hood, the upper part of which is closed, andis provided with a lateral opening, D, directly above which is the vaneE. The top or upper part of the hood is provided on the inner side witha re-enforcing bar of iron, f, extending across diametrically, and ahole is formed in the center of the top and through the bar, whereby thehood is adapted to revolve, as hereinafter described, its rota tionbeing governed by the action of the wind on the vane, insuring theopening to be always kept from the wind.

Fis a vertical shaft, the lower end of which terminates in a steelspindle, its point resting on plate-glass or other suitable material inthe step b, which is supported by the cross-bar a.

c is an annular plate, in practice made of east-iron. Its inner edge isprovided with a down-turned flange, c, to which the neck B of theapparatus is secured by rivets, or in any suitable manner. On the uppersurface of this plate, near its outer edge, is an upwardextending rim orflange, 0, around the outer side of which the lower edge of the hooddepends. Vertical rods of iron (I are secured in the plate 0, close tothe inner side of the flange c. In the present example there are fourrods placed equidistant, which, after rising vertically to a sufficientheight to permit the passage of the blades of the fan, are bent towardthe vertical shaft, their ends being secured in a cast-iron piece, 0,having a hole in the vertical, direction, which constitutes the upperbearing for the .shaft F. The central part of the piece 0 is of extrathickness, and outwardly is circular in shape, constituting a fixedspindle, 0, around which is an annular seat or hearing, whereon the hood0 is suspended. Thus its rotation is attended with but little friction.

The letter H indicates the exhaust-fan, having four blades, which areriveted to the flanges of the casting *5, having a core, through whichthe vertical shaft passes, the parts being secured by the set-screw K.

It will be seen the blades extend radially from the shaft and arevertical, the fan being inclosed by the hood.

Attached to the shaft, above the hood, is the wind-wheel L, havingbuckets n of peculiar form, constructed of sheet-metal strips bent orpartly folded longitudinally, forming, in cross-section, nearly a rightangle, as seen at V in Fig. 2.

The ends of two of the angular strips are secured together by solder orrivets, forming the bucket into an elbow, the angle whereof is aboutsixty-five degrees, the guttered part 8 being on the inner side. Thebuckets are then secured to the upper and lower annular plates orrings, 1) T, which are connected to the shaft, thus forming the wheel,which, on one side, presents the guttered parts 8 to the wind, and onthe opposite side the backs or angular parts t, thereby making the wheelvery sensitive to the wind.

. The operation of this apparatus is as follows: The wind acting on thewheel L causes the exhaust-fan to revolve, which forces the air from thehood through the opening D, the effect of whiclris to create an upwarddraftin the flue. The air thus rising no sooner enters the hood than it,in turn, is expelled.

The advantage resulting from the construction here shown is that theexhaustion or aspiration of air is effected with greater rapidity,

as shown by actual tests of the anernometer, than by similar devices ofdifferent construction.

Having described my invention, I claim and desire to secure by LettersPatent 1. In combination, the revolving hood 0, having the lateralopening D and vane, annular plate 0, provided with flange c, rods d,iron piece 0, having a hole in the vertical direction, and the fixedspindle e, shaft F, and a wind-wheel, and an exhaust-fan, substantiallyas and for the purpose specified.

2. In combination, the hood 0, provided on one side with a lateralopening and vane, and adapted to revolve, shaft F, exhaust-fan H, andthe wind-wheel L, as set forth.

3. In a ventilator, the annular plate 0, provided on its inner edge withthe downward flange c, and on its upper surface with the flange c, androds d, iron piece 0, having a hole in the vertical direction, and thefixed spindle e, as and for the purpose specified.

4. The exhaust-fan H, having radial blades, the extremities of which arevertical, in combinationwith the hood 0, having its upper part closed,from the center of which it is suspended, and provided on one side witha lateral opening and a vane, as shown and described.

5. The wind-wheel L, having guttered buck- LEVI J. WING.

Witnesses:

JNo. T. MADDOX, GnAs. B. MANN.

